From 4bc6727f2023a165e8124fbfe79e2a84181ec8cc Mon Sep 17 00:00:00 2001
From: "kebler.net" <kebler.net@gmail.com>
Date: Sat, 21 Jan 2023 22:47:00 -0800
Subject: [PATCH] feat:  add on the fly volume creating and mapping to the host
 including bind mounting

---
 lib/src/try | 102 ++++++++++++++++++++++++++++++++--------------------
 1 file changed, 63 insertions(+), 39 deletions(-)

diff --git a/lib/src/try b/lib/src/try
index 99c3b3c..bc91682 100755
--- a/lib/src/try
+++ b/lib/src/try
@@ -9,22 +9,42 @@
 try_container () {
 
     declare -A arch=( ["x86_64"]="" ["aarch64"]="-arm64")
+    local mp;local cuser; local hmp; local bind; local vname; local prod; local priv
+    local dkpath; local hostmp; local evar; local hostmap
 
     [[ $# -lt 1 ]] && echo "image name required to try" && return 1
 
     declare OPTION; declare OPTARG; declare OPTIND
     OPTIND=0
-    while getopts 'pt:u:' OPTION; do
+    while getopts 'pr:t:u:m:h:be:s' OPTION; do
     # echo processing: option:$OPTION argument:$OPTARG index:$OPTIND remaining:${@:$OPTIND}
     case "$OPTION" in
     u)
-        ruser=$OPTARG
+     cuser=$OPTARG
+    ;;  
+    b)
+     bind=true
+    ;; 
+    s)
+     save=true
+    ;; 
+    m)
+     mp=$OPTARG
+    ;; 
+    h)
+     hmp=$OPTARG
+    ;; 
+    e)
+      evar="-e $OPTARG"
     ;;  
     t)
-        TAG=$OPTARG
-        ;;    
+      TAG=$OPTARG
+    ;;  
     p)
-        PROD=$OPTARG
+      priv=--privileged
+    ;;           
+    r)
+        prod=$OPTARG
         ;;   
     *)  echo unknown run option -$OPTARG
         echo "USAGE: try <options>"
@@ -35,12 +55,13 @@ try_container () {
 
     shift $((OPTIND - 1))
 
-    user=${2:-$ruser}
-    image=$([[ $user ]] && echo ${user}/)$1
+    [[ ! $1 ]] && echo must supply an image to try && return 1
 
-    # :${TAG:-latest}
+    # user=${2:-$ruser}
+    image=$1
+    shift 1
 
-    if [[ $PROD ]]; then 
+    if [[ $prod ]]; then 
         echo removing any local copy of image $image
         docker image rm $image
         host=prod
@@ -53,43 +74,46 @@ try_container () {
     name=${image//\//-}
     image=$image:${TAG:-latest}
     
-    bmount () {
-      [[ $1 == "-u" ]] && umount=true && shift 
-      declare mp=${1:-opt}
-      declare dir=${2:-${PWD}/_$mp}
-      vname=try-$name-$mp
-      
-    if [[ $umount ]]; then 
-        echo removing volume ....
-        docker volume rm $vname
-        echo "volume $vname was removed"
-        echo "Do you want to also delete the bound volume directory $dir?" 
-        read  -n 1 -p "Warning: ALL changes in $mp directory in container will be lost! [y]=>" REPLY
-        [[ $REPLY != "y" ]] && echo -e "\n" && exit 0
-        sudo rm -rf $dir
-        else 
-        mkdir -p $dir
-        docker volume create --driver local \
+    docker rm try-$name > /dev/null 2>&1
+    if [[ $mp ]]; then 
+        if [[ $bind ]];then
+            dir=$(realpath "${hmp:-${PWD}/mnt/$mp}")
+            vname="try-$name${dir//\//-}"
+            mkdir -p $dir
+            # echo bind $dir to volume $vname
+            docker volume create --driver local \
             --opt type=none \
             --opt device=$dir \
-            --opt o=bind \
-            $vname
-        # echo "type=volume,dst=/$mp,volume-driver=local,volume-opt=type=none,volume-opt=o=bind,volume-opt=device=$dir" 
+            --opt o=bind "$vname" > /dev/null
+          else 
+            vname="try-$name-${mp//\//-}"
+            hostmap="-e HOST_MAP=$(id -u):$(id -g)"
+            dkpath=$(docker info | grep -i "Docker Root Dir" | cut -d':' -f2)/volumes/$vname/_data
+            hostmp=${hmp:-${PWD}/mnt/$mp}
+            echo via volume $vname
+            echo linking $dkpath to $hostmp
+            ln -s $dkpath -T $hostmp 
+        fi  
     fi
-      
-    }
 
     echo starting container with image: $image, and name $name
     echo at container prompt type \'exit\' to exit from shell and remove trial container
-    docker rm try-$name > /dev/null 2>&1
-    docker run -i -t --rm --entrypoint /usr/bin/env --name try-$name --hostname try-$host-$name \
-       -v "$(bmount)":/opt \
-       $image \
-       /bin/bash -l
-    echo "done with session, removing containter try-$name"
- 
-    bmount -u
 
+    docker run -i -t --rm $priv $evar $hostmap --entrypoint /opt/scripts/entrypoint.sh \
+        $([[ $cuser ]] && echo "--user $cuser") \
+        --name try-$name --hostname try-$host-$name \
+        $([[ $mp ]] && echo "-v $vname:/$mp") \
+        "$image" \
+        "$@"
+    echo "done with session, removing containter try-$name"
+    if [[ $mp ]]; then
+        if [[ ! $save ]]; then
+            echo removing volume $vname used for mapping  
+            docker volume rm $vname > /dev/null
+            [[ ! $bind ]] && [[ -h $hostmp ]] && echo "removing link at $hostmp" && rm $hostmp
+       fi
+    fi
+    
     }
 
 # if script was executed then call the function